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Title: Correlation between tunability and anisotropy in magnetoelectric voltage tunable inductor (VTI)

Abstract

Electric field modulation of magnetic properties via magnetoelectric coupling in composite materials is of fundamental and technological importance for realizing tunable energy efficient electronics. Here we provide foundational analysis on magnetoelectric voltage tunable inductor (VTI) that exhibits extremely large inductance tunability of up to 1150% under moderate electric fields. This field dependence of inductance arises from the change of permeability, which correlates with the stress dependence of magnetic anisotropy. Through combination of analytical models that were validated by experimental results, comprehensive understanding of various anisotropies on the tunability of VTI is provided. Results indicate that inclusion of magnetic materials with low magnetocrystalline anisotropy is one of the most effective ways to achieve high VTI tunability. This study opens pathway towards design of tunable circuit components that exhibit field-dependent electronic behavior.

Authors:
ORCiD logo [1];  [2];  [1];  [1];  [1];  [3];  [4];  [5];  [1];  [2]; ORCiD logo [1]
  1. Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
  2. Michigan Technological Univ., Houghton, MI (United States)
  3. Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States); Korea Inst. of Science and Technology, Seoul (Korea, Republic of)
  4. Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States); Peking Univ., Beijing (China)
  5. US Army RDECOM, Redstone Arsenal, AL (United States)
Publication Date:
Research Org.:
Michigan Technological Univ., Houghton, MI (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1500045
Grant/Contract Number:  
SC0002196
Resource Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 7; Journal Issue: 1; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Yan, Yongke, Geng, Liwei D., Zhang, Lujie, Gao, Xiangyu, Gollapudi, Sreenivasulu, Song, Hyun-Cheol, Dong, Shuxiang, Sanghadasa, Mohan, Ngo, Khai, Wang, Yu U., and Priya, Shashank. Correlation between tunability and anisotropy in magnetoelectric voltage tunable inductor (VTI). United States: N. p., 2017. Web. doi:10.1038/s41598-017-14455-0.
Yan, Yongke, Geng, Liwei D., Zhang, Lujie, Gao, Xiangyu, Gollapudi, Sreenivasulu, Song, Hyun-Cheol, Dong, Shuxiang, Sanghadasa, Mohan, Ngo, Khai, Wang, Yu U., & Priya, Shashank. Correlation between tunability and anisotropy in magnetoelectric voltage tunable inductor (VTI). United States. doi:10.1038/s41598-017-14455-0.
Yan, Yongke, Geng, Liwei D., Zhang, Lujie, Gao, Xiangyu, Gollapudi, Sreenivasulu, Song, Hyun-Cheol, Dong, Shuxiang, Sanghadasa, Mohan, Ngo, Khai, Wang, Yu U., and Priya, Shashank. Wed . "Correlation between tunability and anisotropy in magnetoelectric voltage tunable inductor (VTI)". United States. doi:10.1038/s41598-017-14455-0. https://www.osti.gov/servlets/purl/1500045.
@article{osti_1500045,
title = {Correlation between tunability and anisotropy in magnetoelectric voltage tunable inductor (VTI)},
author = {Yan, Yongke and Geng, Liwei D. and Zhang, Lujie and Gao, Xiangyu and Gollapudi, Sreenivasulu and Song, Hyun-Cheol and Dong, Shuxiang and Sanghadasa, Mohan and Ngo, Khai and Wang, Yu U. and Priya, Shashank},
abstractNote = {Electric field modulation of magnetic properties via magnetoelectric coupling in composite materials is of fundamental and technological importance for realizing tunable energy efficient electronics. Here we provide foundational analysis on magnetoelectric voltage tunable inductor (VTI) that exhibits extremely large inductance tunability of up to 1150% under moderate electric fields. This field dependence of inductance arises from the change of permeability, which correlates with the stress dependence of magnetic anisotropy. Through combination of analytical models that were validated by experimental results, comprehensive understanding of various anisotropies on the tunability of VTI is provided. Results indicate that inclusion of magnetic materials with low magnetocrystalline anisotropy is one of the most effective ways to achieve high VTI tunability. This study opens pathway towards design of tunable circuit components that exhibit field-dependent electronic behavior.},
doi = {10.1038/s41598-017-14455-0},
journal = {Scientific Reports},
number = 1,
volume = 7,
place = {United States},
year = {2017},
month = {11}
}

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Cited by: 6 works
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Figures / Tables:

Figure 1 Figure 1: Voltage tunable inductor (VTI). Schematic of (a) the structure of VTI. (b) The working principle of VTI. VTI operates on the principle of modulation of magnetic properties in the magnetostrictive layer through strain generated at the interface by applying voltage to the piezoelectric layer. The magnitude of changemore » in the magnetic property in the magnetostrictive layer is dependent upon various anisotropic factors. (c) Pie diagram of the various types of anisotropy (magnetocrystalline anisotropy Ku, shape anisotropy Kd, stress induced anisotropy for magnetostrictive materials Kσ, and others including magnetic bias, exchange and random anisotropy) influencing the tunability of permeability and inductance. (d) State-of-the-art inductance tunability of VTIs. Under condition of stress induced anisotropy being dominant, small magnetocrystalline and shape anisotropy are essential requirements towards achieving large inductance tunability. The magnetic anisotropy factor K0 represents the summation of initial magnetocrystalline and shape anisotropy. By minimizing K0 this study was able to significantly advance the magnitude of tunability. Sphere shape data points represent this study, and square shape data points refer to prior studies (Ref. Lou5 and Ref. Liu6). (e) Magnetization M behavior under different magnitude of tuning voltage E or stress σ: low field Regime I (blue) corresponds to rotation of in-plane magnetization and high-field Regime II (red) corresponds to rotation of out-of-plane magnetization.« less

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